My neighbor has a 2001 YZ426 that he is going to trade on a street bike in the next few days. The bike has hardly ever been ridden. I'm wondering how these bikes work for the following (I'm in CO): - Enduro/HS racing - Trail riding - Dual Sport conversion. How about reliability or common problems? Thanks for any info, I wasn't planning on purchasing a bike this old but the price is really low (I wanted an '06 something for next season). Thanks.